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A collector test field can be used to investigate the
temperature response of four differently designed solar
collectors. It also demonstrates the effect of the
absorber's colour, of heat insulation and covering of the glass.
Measurements are made simultaneously and ...
Why do tea or coffee get cold onstanding, but never hot?
Watch the water temperatures when a vessel containing cold water
is dipped into a hot water bath.
Metal tubes are heated with steam. The linear expansion of three
different metals is determined with the aid of a rotating-shaft
pointer. From this the metals' coefficient of linear expansion is
determined (Supplementary problem). The use of a rolling-shaft
pointer is ...
One end of a U-shaped metal rod is immersed in boiling water and
the other in cold water. From the warming of the cold water
qualitative and quantitative statements can be made about the
influence of the rod's composition, length and diameter on the heat
flow through it. Since ...
A polished and a black beaker are heated by radiation. Instead
of solar radiation a bright flame located in front of the two
beakers is used.
Both beakers are filled with air since the heat capacity of water
is very large and it would be too slowly heated.
A quick loss of heat is sometimes not wanted. What can be done
to keep the temperature in a vessel
Measure the cooling of hot water in two different
How depends the time required to heat up water on the amount of
water when a defined heating source is available?
Heat up various amounts of water with an electric heating coil
and measure the time dependence of the
Do different liquids heat up to the same extent when subject to
the same heating?
Heat 100 g and 100 ml of water and of glycerol with an electric
heating coil and measure the temperature
in dependence on time.
A measured quantity of water is heated with a heating coil. The
electrical heat output is determined. From the temperature increase
and the heat energy, the specific heat capacity of water is
calculated. This calculation is performed under point 6
of "Evaluation", i.e. ...
In households, a great amount of energy is used to heat up water
- for showers, for washing clothes, for cooking. Exactly how much
is necessary for each degree that each mililitre of water is warmed
up? How are amount of heat, heat capacity and change in
Quantities of heat distribute themselves so that finally all
parts that are in contact with each other have the same
temperature. If the heat capacities and the initial temperatures
are known, then the final temperature can be predicted. Or, in
reverse, the final temperature can ...
The calorimeter can be used to determinethe heat content of a
piece of metal.The heat content can be calculated fromthe mixing
temperature that is reachedin the calorimeter.
Heat up metal bodies of the same mass but different metals to
the same temperature in a water ...
Calorimetry can also be used to determine the temperature of a
hot object that is difficult to measured by any other method, e.g.
because it is too hot for the thermometers available. The
heatcontent of the object can be calculated from the mixture
temperature that is reached in ...
Different forms of energy can be converted into each other. Here
the potential energy of steel pellets is converted to heat when
falling pellets collide.
Let the pellets drop the
same distance numerous times and measure how quickly they warm
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